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Boating Know How
 Mercury VS Mercruiser

Mercruiser VS Mercury

Some boaters, specifically those who are new to the boating world, may not be aware that Mercury and Mercruiser engines are both very different from each other and are ... read more simultaneously somewhat similar to each other. Mercruiser branches off from the Mercury industry, operating as an inboard/sterndrive application while Mercury and other branches (Mariner, Chrysler, Force, etc.) operate as outboard engines. The need for certain types of engines varies depending on the style of the boat a person has, as well as what kind of performance they require.

Mercury outboard engines mount at the very rear of the boat and are visible to boaters from the helm seat. They can go up to a maximum size of 300 horsepower and come with a twin engine for maximum performance and speed. Outboards are known to be quieter than inboards and are also more fuel efficient. The engine size is measured in horsepower. Some of the common characteristics of any outboard engine include:

  • Powerhead (top of engine)
  • Cowling (engine cover)
  • Tiller handler (controls fuel flow and the movement of the engine/changes direction)
  • Mid-section
  • Lower Unit/Gear
  • Propeller




Mercury sterndrive engines (also known as inboard/outdrive engines), cannot be seen from the driver's seat. One-half of the engine is beneath the deck or just in front of the transom while the lower unit and prop assembly extends out at the bottom of the boat. Mercruiser models are one of the most popular sterndrive brands on the market today due to their outstanding performance, flexibility, and longevity. They are also known to have great corrosion resistance, credited stronger paints, alloys, and many other components. The engine size is measured in liter size but is sometimes referred to in horsepower.

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